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yanoconodonh1
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yanoconodon_h1

November 10, 2011
An artist's representation of Yanoconodon allini, a 125 million-year-old mammal that lived during the Mesozoic Era in what is now the Hebei Province in China. The fossil discovery, which was made by a National Science Foundation-funded international team of researchers, provides first-hand evidence of early evolution of the mammalian middle ear--one of the most important features for all modern mammals.


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